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ULI-227D5 RS-232(DB9母头)至5V TTL(DB9公头)转换器,端口供电
ULI-227D3 RS-232(DB9母头)至3.3V TTL(DB9公头)转换器,端口供电
串行转换器,RS-422 DB25 F至5V TTL DB25 M
ULI-227D3 RS-232(DB9母头)至3.3V TTL(DB9公头)转换器,端口供电
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